Italian to English Bus/Financial Economics Co-operatives in Europe

For now I have translated as "premises" and it is in the glossary as "masonry buildings", but it just doesn't seem to make a lot of sense. It is part of a questionnaire sent by economists to all types of co-operatives (services and manufacturing) throughout Europe. The previous set of questions was on personnel and so is that which follows. What I expected was something like would they buy parts of their process they couldn't perform themselves by vertically integrating, buying a packaging plant, for example, pèrhaps in some sort of an "intramural" "extramural" sense. All help and suggestions welcome. Four points guaranteed for the best answer.

2.2. Quali di questi aspetti sono più rilevanti nella organizzazione produttiva? (max 1 voci)
I. Tutte le lavorazioni importanti per l’impresa devono essere realizzate al suo interno
II. L’azienda deve cercare di patrimonializzarsi acquistando le **strutture murarie** in cui opera
III. La ricerca di una flessibilità produttiva e dimensionale è un valore che giustifica anche la rinuncia ad una parte dell’utile